#include<stdio.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
int main()
{
    const char* c = "hello:write\n";
    write(1,c,strlen(c));

    const char* cc = "hello:fprintf\n";
    fprintf(stdout,"%s",cc);

    const char* ccc = "hello:fwrite\n";
    fwrite(ccc,strlen(ccc),1,stdout);

    fork();
}
